Question

10. Pratibha wants to prepare a driveway in her house. The driveway is 300 cm wide and 1500
long. She dug it 20 cm deep and now wants to line it with bricks 30 cm long, 10 cm wide and
accommodate?
10 cm thick. How many bricks will she need?​

Answer 1

Answer:

3000 bricks

Step-by-step explanation:

find the volume driveway = length× breadth×height

= 300×1500×20 =9000000cm^3

volume of 1 brick = 30 ×10×10= 3000cm ^3

number of bricks = volume of driveway ÷ volume of brick

= 9000000/3000

= 3000 bricks